423320031 has 6 divisors (see below), whose sum is σ = 611462280. Its totient is φ = 282213348.

The previous prime is 423320017. The next prime is 423320041. The reversal of 423320031 is 130023324.

It is not a de Polignac number, because 423320031 - 2⁷ = 423319903 is a prime.

It is a super-2 number, since 2×423320031² = 358399697291681922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423319986 and 423320013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423320041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23517771 + ... + 23517788.

It is an arithmetic number, because the mean of its divisors is an integer number (101910380).

Almost surely, 2^423320031 is an apocalyptic number.

423320031 is a deficient number, since it is larger than the sum of its proper divisors (188142249).

423320031 is a wasteful number, since it uses less digits than its factorization.

423320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47035565 (or 47035562 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 423320031 is about 20574.7425500296. The cubic root of 423320031 is about 750.8553388232.

Adding to 423320031 its reverse (130023324), we get a palindrome (553343355).

The spelling of 423320031 in words is "four hundred twenty-three million, three hundred twenty thousand, thirty-one".